INFLUENCE OF THE INTERFACE CONDITION ON STRESS DISTRIBUTION IN A LAYERED SYSTEM (ABRIDGEMENT)

The behavior of a system containing a number of homogeneous, isotropic linear-elastic layers is analyzed using a linear fictional model to simulate the real behavior at the interfaces. The results of the computations emphasize the influence of the interface condition on the stress distribution and hence on the design of pavements. In flexible pavements, the radial stress is strongly affected by the interface condition. The vertical stress and the deflection bowl are also affected, but to a smaller extent. Since the rational design of flexible pavements is based on the radial stress or strain at the bottom of the asphalt-concrete layer and on the vertical stress or strain at the top of the subgrade, the determination and use in design of the modulus of resistance to displacement between different layers should improve the design system and make it more realistic. In rigid pavement overlays also, the condition of the interface between the existing and the new surface is important. In the case analyzed, the partial bond (as defined by the Corps of Engineers) corresponds to a large value of the modulus of resistance to displacement. Since the existence of such a large value is questionable, the determination of realistic values will make the design of overlays more rational.

• Record URL:
  http://onlinepubs.trb.org/Onlinepubs/trr/1976/616/616-015.pdf
• Summary URL:
  https://scholar.google.com/scholar_lookup?title=INFLUENCE+OF+THE+INTERFACE+CONDITION+ON+STRESS+DISTRIBUTION+IN+A+LAYERED+SYSTEM+(ABRIDGEMENT)&author=J.+Uzan&publication_year=1976
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• Supplemental Notes:
  • Publication of this paper sponsored by Committee on Mechanics of Earth Masses and Layered System Distribution, posting, or copying of this PDF is strictly prohibited without written permission of the Transportation Research Board of the National Academy of Sciences. Unless otherwise indicated, all materials in this PDF are copyrighted by the National Academy of Sciences. Copyright © National Academy of Sciences. All rights reserveds.
• Authors:
  • Uzan, J
• Publication Date: 1976

Media Info

• Media Type: Print
• Features: Figures; References;
• Pagination: pp 71-73
• Monograph Title: Soil mechanics: rutting in asphalt pavements, embankments on varved clays and foundations
• Serial:
  • Transportation Research Record
  • Issue Number: 616
  • Publisher: Transportation Research Board
  • ISSN: 0361-1981

Subject/Index Terms

• TRT Terms: Asphalt concrete; Deformation curve; Interfaces; Overlays (Pavements); Pavement design; Radials; Rigid pavements; Simulation; Stresses; Subgrade (Pavements)
• Uncontrolled Terms: Vertical stress
• Old TRIS Terms: Layered system mechanics; Radial stress
• Subject Areas: Geotechnology; Highways; Pavements;

Filing Info

• Accession Number: 00163002
• Record Type: Publication
• ISBN: 0309025958
• Files: TRIS, TRB
• Created Date: Oct 13 1977 12:00AM